Power source converter and handset attachment for vehicular radio telephone, or similar article



FIG. 1 is a right side, top and front perspective view of a power source converter and handset attachment for vehicular radio telephone, or similar article showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a rear elevational view thereof; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a power source converter and handset attachment for vehicular radio telephone, or similar article, substantially as shown and described. 